.bird-body {
	width: 30px;
	height: 30px;
	background-color: #FFA500;
	border-radius: 50%;
	position: relative;
	margin-top: 100px;
}
.eye {
	width: 4px;
	height: 4px;
	background-color: #000;
	border-radius: 50%;
	position: absolute;
	top: 10px;
	right: 6px;
	z-index: 102;
}
.mouse {
	width: 0;
	height: 0;
	border: 10px solid red;
	border-right: 5px solid transparent;
	border-top: 5px solid transparent;
	border-bottom: 5px solid transparent;
	position: absolute;
	left: 25px;
	bottom: 7px;
	z-index: -1;
}
.wing {
	/* width: 0;
	height: 0;
	border: 14px solid skyblue;
	border-right: 16px solid transparent;
	border-left: 6px solid transparent;
	border-bottom: 10px solid transparent;
	border-radius: 20%;
	position: absolute;
	top: 15px;
	left: -5px;
	transform-origin: top;/* 设置旋转轴心 */
	/* animation: fly 0.5s infinite; */
	width: 20px;
	height: 12px;
	background-color: skyblue;
	border-radius: 0 0 20px 20px;
	position: absolute;
	top: 14px;
	left: -5px;
	transform-origin: right;/* 设置旋转轴心 */
	animation: fly-two 0.5s infinite;
}
@keyframes fly {
	0% {
		transform: rotateX(0deg);
	}
	50% {
		transform: rotateX(180deg);
	}
	100% {
		transform: rotateX(0deg);
	}
}
@keyframes fly-two {
	0% {
		transform: rotate(-20deg);
	}
	50% {
		transform: rotate(40deg);
	}
	100% {
		transform: rotate(-20deg);
	}
}